uk.gov.ofwat.fountain.aspect.cache.dao.specific.branchDao.FindByCompanyAndRunAspect.java Source code

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Here is the source code for uk.gov.ofwat.fountain.aspect.cache.dao.specific.branchDao.FindByCompanyAndRunAspect.java

Source

/*
 *  Copyright (C) 2009 Water Services Regulation Authority (Ofwat)
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
package uk.gov.ofwat.fountain.aspect.cache.dao.specific.branchDao;

import java.util.Map;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.core.annotation.Order;

import uk.gov.ofwat.fountain.aspect.cache.dao.DaoCache;
import uk.gov.ofwat.fountain.domain.Branch;

@Aspect
@Order(283)
public class FindByCompanyAndRunAspect extends DaoCache {
    private Map<String, Object> cacheByCompanyAndRun;

    @SuppressWarnings("unchecked")
    @Override
    public Map getCache() {
        return cacheByCompanyAndRun;
    }

    @Override
    @SuppressWarnings("unchecked")
    public void setCache(Map cache) {
        cacheByCompanyAndRun = cache;
    }

    @Around("execution(* uk.gov.ofwat.fountain.dao.BranchDao+.findByCompanyAndRun(int, int))")
    public Object cacheOnFindByCompanyAndRun(ProceedingJoinPoint pjp) throws Throwable {
        if (!isEnabled()) {
            return pjp.proceed();
        }
        if (null == getCache()) {
            initialiseCache(pjp.getTarget().getClass());
        }

        Object[] args = pjp.getArgs();
        String key = (Integer) args[0] + "-" + (Integer) args[1];
        if (key.equals("0-0")) {
            // old style branches that don't have a company or run 
            return pjp.proceed();
        }

        Object retVal = null;
        if (cacheByCompanyAndRun.containsKey(key)) {
            retVal = cacheByCompanyAndRun.get(key);
        } else {
            retVal = pjp.proceed();
            cacheByCompanyAndRun.put(key, (Object) retVal);
            incrementCache(pjp);
        }
        return retVal;
    }

    @Around("execution(public uk.gov.ofwat.fountain.domain.Branch uk.gov.ofwat.fountain.dao.BranchDao+.create(String , int , int ))")
    public Branch removeFromCacheOnCreate(ProceedingJoinPoint pjp) throws Throwable {
        if (!isEnabled()) {
            return (Branch) pjp.proceed();
        }
        Object[] args = pjp.getArgs();
        if (null != cacheByCompanyAndRun) {
            // Note args[0] not part of key
            String key = (Integer) args[1] + "-" + (Integer) args[2];
            cacheByCompanyAndRun.remove(key);
        }
        return (Branch) pjp.proceed(args);
    }

    @Around("execution(public void uk.gov.ofwat.fountain.dao.BranchDao+.update(uk.gov.ofwat.fountain.domain.Branch))")
    public void removeFromCacheOnUpdate(ProceedingJoinPoint pjp) throws Throwable {
        if (!isEnabled()) {
            pjp.proceed();
            return;
        }
        Object[] args = pjp.getArgs();
        pjp.proceed(args);
        if (null != cacheByCompanyAndRun) {
            Branch branch = (Branch) args[0];
            String key = branch.getCompanyId() + "-" + branch.getRunId();
            cacheByCompanyAndRun.remove(key);
        }
    }

}